Modem & Fax Software

With decades of experience in engineering data and facsimile modems, VOCAL has proven expertise that can’t be match. With its unique and varied history VOCAL is in the perfect position to offer solutions for legacy analog to VoIP transitions as well as development support for embedded, M2M, and cloud-based data and fax modems.

VOCALs robust software based data and fax modem stack has been deployed worldwide and earned its reputation for interoperability with all variations of data and fax modems. This same modem stack has been incorporated into a wide range of offerings including cloud-based and VoIP aware endpoints, fax and data gateways, optimized software libraries for a comprehensive range of platforms, embedded modems, and demodulation and decoding utilities.

As products become obsolete and unsupported, hardware begins failing, and telecom providers continue to remove copper POTS lines, VOCALs modem solutions prove to be vital for maintaining a base of legacy devices.

VOCALs feature rich modem stack includes support for standardized ITU-T modulations and error correction protocols configurable via industry standard AT commands or direct software interfaces making it a drop in replacement for many existing modem applications and easy to integrate into any new product designs.

From document management, to bulk fax delivery systems, VOCAL’s Fax Over IP Server Library is designed to allow Linux and Windows developers the ability to create fax endpoints supporting both t.38 and t.30. Interoperability with fax devices of all types – whether they are fax machines, servers, gateways or cloud-fax, is a must – and FXSRV delivers.

VOCAL’s fax modem software libraries include support for Super/Group 3 Fax as well as a complete range of ETSI / ITU / IEEE compliant algorithms. Our source code is optimized for performance on ANSI C and leading DSP architectures from TI, ADI, Intel, ARM and other vendors. VOCAL’s fax software may be licensed as a library or part of a complete design with custom solutions available.